Dec 26, 2000 · Calculations of how much and how fast the ice sheet has thinned and retreated since the peak of the Earth's last major ice age 20,000 years ago are based in large part on a recent reconstruction of how big the ice sheet was during that last glacial maximum. That reconstruction included a West Antarctic Ice Sheet three times as large as it is now.
Oct 02, 2019 · New research shows that warming by more than 2°C could be a tipping point for Antarctica's ice sheets, resulting in widespread meltdown and changes to the world's shorelines for centuries to come.
Jun 04, 2019 · The participating experts quantified their uncertainties for three physical processes relevant to ice sheet mass balance: accumulation, discharge, and surface runoff. They did this for each of the Greenland, West Antarctic, and East Antarctic ice sheets (GrIS, WAIS, and EAIS, respectively), and for two schematic temperature change scenarios. Sep 27, 2019 · Antarctic scientists from the UK have found more than 65,000 pools of melting ice on the edge of East Antarctic Ice Sheet. The dire discovery led by Durham University highlights the region's ... Oct 09, 2019 · Upside-down rivers lapping at the bottoms of ice sheets and brilliant blue mini-lakes dotted on top may be speeding up Antarctic melting. Numerous ice rises around the edge of the Antarctic Ice Sheet are in fact miniature ice sheets — independent entities with many of the characteristics shared with the larger, main ice sheet (Robin, 1953). Being smaller and numerous, ice rises represent a far larger sample of possible ice sheets. Jun 28, 2018 · The June 22 paper, along with other scientific studies provide a cogent explanation for what is really driving the melting of the West Antarctic ice sheets. The submerged volcanoes are more active than previously thought and are melting the ice sheets far more rapidly than scientists believe possible.
The mean thickness of the Antarctic ice sheet is 2.16 km; the maximum known thickness of the ice sheet is 4776 m (Terre Adélie). Without the ice, Antarctica may be the lowest lying continent; the greatest known depression of bedrock is the Byrd Subglacial Basin, at 2538 m below sea level. The Antarctic ice sheet is one of the two polar ice caps of the Earth. It covers about 98% of the Antarctic continent and is the largest single mass of ice on Earth. It covers an area of almost 14 million square kilometres (5.4 million square miles) and contains 26.5 million cubic kilometres (6,400,000 cubic miles) of ice. Jan 22, 2009 · We use two independent estimates of the spatial covariance of temperature across the Antarctic ice sheet: surface temperature measurements from satellite thermal infrared (T IR) observations 8 ...